How it works
Spot forex has no central exchange, so there is no single opening bell. Instead, trading follows business hours around the world. The tool shows four conventional sessions, each defined in the local time of its financial center:
| Session | Local hours | IANA time zone |
|---|---|---|
| Sydney | 07:00–16:00 | Australia/Sydney |
| Tokyo | 09:00–18:00 | Asia/Tokyo |
| London | 08:00–17:00 | Europe/London |
| New York | 08:00–17:00 | America/New_York |
The tool converts each window into your device's time zone using the IANA time zone database, the same source used by most operating systems. That means daylight saving time (DST) in each city is handled automatically; you never need to adjust anything by hand.
Formula
For each session and each day:
- Take the session's local start and end times in its own city's time zone.
- Convert both to UTC using that city's offset on that date (including DST, if in effect).
- Convert from UTC to your time zone.
A session is shown as open if the current time falls between its converted start and end.
Worked example: London and New York in UTC
Here is how the two busiest sessions look in UTC at different times of year.
| Period | London (UTC) | New York (UTC) | Overlap |
|---|---|---|---|
| Northern winter (GMT, EST) | 08:00–17:00 | 13:00–22:00 | 13:00–17:00, 4 hours |
| Northern summer (BST, EDT) | 07:00–16:00 | 12:00–21:00 | 12:00–16:00, 4 hours |
| US on DST, UK not yet | 08:00–17:00 | 12:00–21:00 | 12:00–17:00, 5 hours |
The third row matters because the United States and the United Kingdom change their clocks on different dates in spring and autumn. For a short period, the overlap is an hour longer than usual. A fixed "London opens at 08:00 UTC" table would get this wrong; computing from local times does not.
Sydney and Tokyo
Tokyo does not use DST, so its session is always 00:00–09:00 UTC. Sydney's DST runs during the southern summer, roughly October to April. During that time, Sydney's 07:00–16:00 is 20:00–05:00 UTC (starting the previous UTC day); outside it, the session runs 21:00–06:00 UTC.
Tips
- Match your schedule to activity. If you can only trade in the evening, check which session is open then and which pairs are most active.
- Note the weekend gap. Prices can open on Monday at a different level from Friday's close.
- Combine with the calendar. Major releases and central bank decisions can change conditions within a session. See the Economic Calendar.
- Learn what each session is like on our Forex Sessions page and in Forex trading sessions.
- Think about liquidity. Quieter periods can bring wider spreads.
Risk note
Session times are a guide to typical activity, not a guarantee of liquidity or volatility. Spreads can widen and prices can gap at any time, particularly around session changes, holidays and news. This tool is educational and does not constitute trading advice.
Frequently asked questions
Is the forex market open 24 hours a day?
On weekdays, yes. Trading moves from one financial center to the next, from the Asia-Pacific open early in the week through to the New York close on Friday. Most brokers close for the weekend.
Why do session times shift during the year?
Sydney, London and New York observe daylight saving time on different dates, and Tokyo does not observe it at all. Converted to your time zone, the sessions can move by an hour at different points in the year.
Are these official exchange opening times?
No. Spot forex is traded over the counter, not on a single exchange. The session windows are widely used conventions based on local business hours in each center.
Which session is the busiest?
Activity is generally highest when London and New York overlap, because the two largest trading centers are open at the same time.
Do broker trading hours match these sessions?
Not exactly. Brokers set their own opening and closing times, and may pause trading briefly around the daily rollover. Check your platform's schedule.